I try some commands. They don’t work. I realise that because this is blogdown, my sparklines need to be wrapped inside a call to frameWidget. I try the commands again. They appear to work. I upload the post. They no longer work. I remove the references to frameWidget. I check the blogdown documentation. I create a custom footer. I add an exclude_jquery parameter. I modify the YAML header to the post. I upload again. Do my sparklines work?